Django SMTPAuthenticationError

I am new in django and developing a web application using django.I have successfully set the Signup functionality using Userena in my web application and can Register as a user with Verification Email.
i can show you my SMTP settings in my settings.py file

Go to Allow less secure apps and choose "Allow" to let less secure apps access your Google account. We don't recommend this option because it may make it easier for someone to gain access to your account.